如何获取Finalshell中保存的密码

通过Finalshell工具连接linux服务之后，但是忘记了linux登入密码，不需要重置就可以找回，步骤如下

步骤1，找到finalshell工具安装路径

步骤2，该文件夹下面文件都是以连接过的服务主机名称命名的，打开你忘记密码的主机名称文件

步骤3，文件中passWord后面绿色就是加密的密码 如图

步骤4，如下图解密代码，把加密密码当做入参，执行一下main方法，控制台就可以打印出解密的密码

package cn.demo.controller;import java.io.ByteArrayOutputStream;        import java.io.DataOutputStream;        import java.io.IOException;        import java.math.BigInteger;        import java.security.MessageDigest;        import java.security.NoSuchAlGorithmException;        import java.security.SecureRandom;        import java.util.Base64;        import java.util.Random;        import javax.crypto.Cipher;        import javax.crypto.SecreTKEy;        import javax.crypto.SecretKeyFactory;        import javax.crypto.spec.DESKeySpec;public class FinalShellDecodePass {    public static void main(String[] args)throws Exception {        //入参改成加密的密码，运行一下，其他地方不需要修改        System.out.println(decodePass("e0QlMF52FiAGXQl0r1RQao7UE9PbfFm+"));    }    public static byte[] desDecode(byte[] data, byte[] head) throws Exception {        SecureRandom sr = new SecureRandom();        DESKeySpec dks = new DESKeySpec(head);        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");        SecretKey securekey = keyFactory.generateSecret(dks);        Cipher cipher = Cipher.getInstance("DES");        cipher.init(2, securekey, sr);        return cipher.doFinal(data);    }    public static String decodePass(String data) throws Exception {        if (data == null) {            return null;        } else {            String rs = "";            byte[] buf = Base64.getDecoder().decode(data);            byte[] head = new byte[8];            System.arraycopy(buf, 0, head, 0, head.length);            byte[] d = new byte[buf.length - head.length];            System.arraycopy(buf, head.length, d, 0, d.length);            byte[] bt = desDecode(d, ranDomKey(head));            rs = new String(bt);            return rs;        }    }    static byte[] ranDomKey(byte[] head) {        long ks = 3680984568597093857L / (long)(new Random((long)head[5])).nextInt(127);        Random random = new Random(ks);        int t = head[0];        for(int i = 0; i < t; ++i) {            random.nextLong();        }        long n = random.nextLong();        Random r2 = new Random(n);        long[] ld = new long[]{(long)head[4], r2.nextLong(), (long)head[7], (long)head[3], r2.nextLong(), (long)head[1], random.nextLong(), (long)head[2]};        ByteArrayOutputStream bos = new ByteArrayOutputStream();        DataOutputStream dos = new DataOutputStream(bos);        long[] var15 = ld;        int var14 = ld.length;        for(int var13 = 0; var13 < var14; ++var13) {            long l = var15[var13];            try {                dos.writeLong(l);            } catch (IOException var18) {                var18.printStackTrace();            }        }        try {            dos.close();        } catch (IOException var17) {            var17.printStackTrace();        }        byte[] keyData = bos.toByteArray();        keyData = md5(keyData);        return keyData;    }    public static byte[] md5(byte[] data) {        String ret = null;        byte[] res=null;        try {            MessageDigest m;            m = MessageDigest.getInstance("MD5");            m.update(data, 0, data.length);            res=m.digest();            ret = new BigInteger(1, res).toString(16);        } catch (NoSuchAlgorithmException e) {            e.printStackTrace();        }        return res;    }}

步骤5，如图

步骤6，连接成功。

来源地址：https://blog.csdn.net/qq_40609490/article/details/127394663